Saturday was the third time this season that the Pac-12 has had two days when its teams lost at least five nonconference games. In the previous 20 seasons, that happened only twice.

The previous worst performance by a major conference in the past 20 years came in 2003, when the Big Ten went 46-30 (.605). The Pac-12's previous worst was 38-24 (.613) in 2009, when it was still known as the Pac-10.

Luguentz Dort and Arizona State were stunned by Princeton. AP Photo/Ralph Freso

Princeton's win was the second by the Ivy League over a ranked team this month. Penn beat defending NCAA champion Villanova on Dec. 11, and Arizona State coach Bobby Hurley said the playing field is becoming more equitable.

"There is nothing good that can be taken from this," Hurley said after his team fell to 9-3. "We took a step back. There is a lot of parity in college basketball. If you're not ready to play, you're going to get beat."

UCLA (7-6) has lost four straight games to Belmont, Cincinnati, Ohio State and Liberty by an average margin of 15 points. The Bruins had not dropped four nonconference games in a row since the 2010-11 season.

"This might be one of the most disappointing games I've had," coach Steve Alford said after the Liberty loss. "Trying to reflect back throughout 28 years [as a coach], the word 'disappointment' of just our team and how we performed -- I don't know the last time I was this disappointed in a team. It did not look like us on any level."